1. What is the primary environmental cost of Southeast Asia's dominance in exports of rubber and

palm oil?

Deforestation

Explanation:

Deforestation is the primary environmental cost of Southeast Asia's dominance in exports of rubber and palm oil.

Deforestation is the permanent removal of trees to make room for something besides forest and this occurs in the Southern Asia to make room for Rubber and palm oil which are significant in Malaysia, Indonesia, and southern Thailand  etc.

Demand for these commodities cause the environmental concerns over deforestation as the main concern in Southern Asia.

the correct answer would be true friction causes the faults to slip or collide

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.